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Electrically programmable memory cell

  • US 5,687,113 A
  • Filed: 03/28/1995
  • Issued: 11/11/1997
  • Est. Priority Date: 03/30/1994
  • Status: Expired due to Term
First Claim
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1. Electrically programmable cell comprising:

  • a substrate of a first conductivity type, having a channel region having a first side and a second side;

    a control gate located on a first insulating layer above the channel region;

    a drain region of a second conductivity type located on the substrate adjacent to the first side of the channel region, the drain region having a low-doped region adjacent to the channel region;

    a source region of the second conductivity type located on the substrate adjacent to the second side of the channel region;

    an insulated floating gate located on a second insulating layer above a portion of the drain region, the insulated floating gate being disposed such that it does not extend over the channel region.

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